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VERSION = 3 |
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PATCHLEVEL = 13 |
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SUBLEVEL = 0 |
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EXTRAVERSION = -rc4 |
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NAME = One Giant Leap for Frogkind |
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# *DOCUMENTATION* # To see a list of typical targets execute "make help" # More info can be located in ./README # Comments in this file are targeted only to the developer, do not # expect to learn how to build the kernel reading this file. |
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# Do not: # o use make's built-in rules and variables |
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# (this increases performance and avoids hard-to-debug behaviour); |
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# o print "Entering directory ..."; MAKEFLAGS += -rR --no-print-directory |
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# Avoid funny character set dependencies |
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unexport LC_ALL |
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LC_COLLATE=C LC_NUMERIC=C |
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export LC_COLLATE LC_NUMERIC |
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# Avoid interference with shell env settings unexport GREP_OPTIONS |
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# We are using a recursive build, so we need to do a little thinking # to get the ordering right. # # Most importantly: sub-Makefiles should only ever modify files in # their own directory. If in some directory we have a dependency on # a file in another dir (which doesn't happen often, but it's often # unavoidable when linking the built-in.o targets which finally # turn into vmlinux), we will call a sub make in that other dir, and # after that we are sure that everything which is in that other dir # is now up to date. # # The only cases where we need to modify files which have global # effects are thus separated out and done before the recursive # descending is started. They are now explicitly listed as the # prepare rule. # To put more focus on warnings, be less verbose as default # Use 'make V=1' to see the full commands |
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ifeq ("$(origin V)", "command line") KBUILD_VERBOSE = $(V) |
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endif ifndef KBUILD_VERBOSE KBUILD_VERBOSE = 0 endif |
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# Call a source code checker (by default, "sparse") as part of the # C compilation. # # Use 'make C=1' to enable checking of only re-compiled files. # Use 'make C=2' to enable checking of *all* source files, regardless # of whether they are re-compiled or not. # # See the file "Documentation/sparse.txt" for more details, including # where to get the "sparse" utility. |
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ifeq ("$(origin C)", "command line") KBUILD_CHECKSRC = $(C) |
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endif ifndef KBUILD_CHECKSRC KBUILD_CHECKSRC = 0 endif # Use make M=dir to specify directory of external module to build # Old syntax make ... SUBDIRS=$PWD is still supported # Setting the environment variable KBUILD_EXTMOD take precedence ifdef SUBDIRS KBUILD_EXTMOD ?= $(SUBDIRS) endif |
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ifeq ("$(origin M)", "command line") KBUILD_EXTMOD := $(M) endif |
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# kbuild supports saving output files in a separate directory. # To locate output files in a separate directory two syntaxes are supported. # In both cases the working directory must be the root of the kernel src. # 1) O= # Use "make O=dir/to/store/output/files/" |
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# |
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# 2) Set KBUILD_OUTPUT # Set the environment variable KBUILD_OUTPUT to point to the directory # where the output files shall be placed. # export KBUILD_OUTPUT=dir/to/store/output/files/ # make # # The O= assignment takes precedence over the KBUILD_OUTPUT environment # variable. # KBUILD_SRC is set on invocation of make in OBJ directory # KBUILD_SRC is not intended to be used by the regular user (for now) ifeq ($(KBUILD_SRC),) # OK, Make called in directory where kernel src resides # Do we want to locate output files in a separate directory? |
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ifeq ("$(origin O)", "command line") KBUILD_OUTPUT := $(O) |
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endif |
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ifeq ("$(origin W)", "command line") |
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export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) |
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endif |
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# That's our default target when none is given on the command line |
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PHONY := _all |
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_all: |
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# Cancel implicit rules on top Makefile $(CURDIR)/Makefile Makefile: ; |
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ifneq ($(KBUILD_OUTPUT),) # Invoke a second make in the output directory, passing relevant variables # check that the output directory actually exists saved-output := $(KBUILD_OUTPUT) KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) $(if $(KBUILD_OUTPUT),, \ $(error output directory "$(saved-output)" does not exist)) |
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PHONY += $(MAKECMDGOALS) sub-make |
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$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
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@: |
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sub-make: FORCE |
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$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ KBUILD_SRC=$(CURDIR) \ |
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KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ $(filter-out _all sub-make,$(MAKECMDGOALS)) |
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# Leave processing to above invocation of make skip-makefile := 1 endif # ifneq ($(KBUILD_OUTPUT),) endif # ifeq ($(KBUILD_SRC),) # We process the rest of the Makefile if this is the final invocation of make ifeq ($(skip-makefile),) # If building an external module we do not care about the all: rule # but instead _all depend on modules |
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PHONY += all |
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ifeq ($(KBUILD_EXTMOD),) _all: all else _all: modules endif srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) |
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objtree := $(CURDIR) src := $(srctree) obj := $(objtree) |
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VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
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export srctree objtree VPATH |
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# SUBARCH tells the usermode build what the underlying arch is. That is set # first, and if a usermode build is happening, the "ARCH=um" on the command # line overrides the setting of ARCH below. If a native build is happening, # then ARCH is assigned, getting whatever value it gets normally, and # SUBARCH is subsequently ignored. |
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SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ -e s/sun4u/sparc64/ \ |
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-e s/arm.*/arm/ -e s/sa110/arm/ \ |
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-e s/s390x/s390/ -e s/parisc64/parisc/ \ |
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-e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
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-e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) |
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# Cross compiling and selecting different set of gcc/bin-utils # --------------------------------------------------------------------------- # # When performing cross compilation for other architectures ARCH shall be set # to the target architecture. (See arch/* for the possibilities). # ARCH can be set during invocation of make: # make ARCH=ia64 # Another way is to have ARCH set in the environment. # The default ARCH is the host where make is executed. # CROSS_COMPILE specify the prefix used for all executables used # during compilation. Only gcc and related bin-utils executables # are prefixed with $(CROSS_COMPILE). # CROSS_COMPILE can be set on the command line # make CROSS_COMPILE=ia64-linux- # Alternatively CROSS_COMPILE can be set in the environment. |
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# A third alternative is to store a setting in .config so that plain # "make" in the configured kernel build directory always uses that. |
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# Default value for CROSS_COMPILE is not to prefix executables # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
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ARCH ?= $(SUBARCH) |
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CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
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# Architecture as present in compile.h |
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UTS_MACHINE := $(ARCH) SRCARCH := $(ARCH) |
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# Additional ARCH settings for x86 ifeq ($(ARCH),i386) SRCARCH := x86 endif ifeq ($(ARCH),x86_64) SRCARCH := x86 endif |
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# Additional ARCH settings for sparc |
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ifeq ($(ARCH),sparc32) SRCARCH := sparc endif |
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ifeq ($(ARCH),sparc64) |
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SRCARCH := sparc |
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endif |
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# Additional ARCH settings for sh ifeq ($(ARCH),sh64) SRCARCH := sh endif |
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# Additional ARCH settings for tile |
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ifeq ($(ARCH),tilepro) SRCARCH := tile endif |
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ifeq ($(ARCH),tilegx) SRCARCH := tile endif |
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# Where to locate arch specific headers hdr-arch := $(SRCARCH) |
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KCONFIG_CONFIG ?= .config |
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export KCONFIG_CONFIG |
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# SHELL used by kbuild CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ else if [ -x /bin/bash ]; then echo /bin/bash; \ else echo sh; fi ; fi) |
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HOSTCC = gcc HOSTCXX = g++ |
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HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
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HOSTCXXFLAGS = -O2 |
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# Decide whether to build built-in, modular, or both. # Normally, just do built-in. |
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KBUILD_MODULES := KBUILD_BUILTIN := 1 # If we have only "make modules", don't compile built-in objects. # When we're building modules with modversions, we need to consider # the built-in objects during the descend as well, in order to |
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# make sure the checksums are up to date before we record them. |
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ifeq ($(MAKECMDGOALS),modules) KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) endif # If we have "make <whatever> modules", compile modules # in addition to whatever we do anyway. # Just "make" or "make all" shall build modules as well ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) KBUILD_MODULES := 1 endif ifeq ($(MAKECMDGOALS),) KBUILD_MODULES := 1 endif |
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export KBUILD_MODULES KBUILD_BUILTIN |
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export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD # Beautify output # --------------------------------------------------------------------------- # # Normally, we echo the whole command before executing it. By making # that echo $($(quiet)$(cmd)), we now have the possibility to set # $(quiet) to choose other forms of output instead, e.g. # # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< # # If $(quiet) is empty, the whole command will be printed. # If it is set to "quiet_", only the short version will be printed. |
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# If it is set to "silent_", nothing will be printed at all, since |
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# the variable $(silent_cmd_cc_o_c) doesn't exist. # |
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# A simple variant is to prefix commands with $(Q) - that's useful |
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# for commands that shall be hidden in non-verbose mode. # # $(Q)ln $@ :< # # If KBUILD_VERBOSE equals 0 then the above command will be hidden. # If KBUILD_VERBOSE equals 1 then the above command is displayed. ifeq ($(KBUILD_VERBOSE),1) quiet = Q = else quiet=quiet_ Q = @ endif # If the user is running make -s (silent mode), suppress echoing of # commands |
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ifneq ($(filter s% -s%,$(MAKEFLAGS)),) |
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quiet=silent_ endif export quiet Q KBUILD_VERBOSE |
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# Look for make include files relative to root of kernel src MAKEFLAGS += --include-dir=$(srctree) |
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# We need some generic definitions (do not try to remake the file). $(srctree)/scripts/Kbuild.include: ; |
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include $(srctree)/scripts/Kbuild.include |
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# Make variables (CC, etc...) AS = $(CROSS_COMPILE)as LD = $(CROSS_COMPILE)ld CC = $(CROSS_COMPILE)gcc CPP = $(CC) -E AR = $(CROSS_COMPILE)ar NM = $(CROSS_COMPILE)nm STRIP = $(CROSS_COMPILE)strip OBJCOPY = $(CROSS_COMPILE)objcopy OBJDUMP = $(CROSS_COMPILE)objdump AWK = awk GENKSYMS = scripts/genksyms/genksyms |
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INSTALLKERNEL := installkernel |
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DEPMOD = /sbin/depmod |
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PERL = perl CHECK = sparse |
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CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ -Wbitwise -Wno-return-void $(CF) |
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CFLAGS_MODULE = AFLAGS_MODULE = LDFLAGS_MODULE = |
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CFLAGS_KERNEL = AFLAGS_KERNEL = |
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CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
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# Use USERINCLUDE when you must reference the UAPI directories only. USERINCLUDE := \ -I$(srctree)/arch/$(hdr-arch)/include/uapi \ -Iarch/$(hdr-arch)/include/generated/uapi \ -I$(srctree)/include/uapi \ -Iinclude/generated/uapi \ -include $(srctree)/include/linux/kconfig.h |
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# Use LINUXINCLUDE when you must reference the include/ directory. # Needed to be compatible with the O= option |
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LINUXINCLUDE := \ -I$(srctree)/arch/$(hdr-arch)/include \ -Iarch/$(hdr-arch)/include/generated \ $(if $(KBUILD_SRC), -I$(srctree)/include) \ -Iinclude \ $(USERINCLUDE) |
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KBUILD_CPPFLAGS := -D__KERNEL__ |
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KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
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-fno-strict-aliasing -fno-common \ |
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-Werror-implicit-function-declaration \ |
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-Wno-format-security \ -fno-delete-null-pointer-checks |
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KBUILD_AFLAGS_KERNEL := KBUILD_CFLAGS_KERNEL := |
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KBUILD_AFLAGS := -D__ASSEMBLY__ |
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KBUILD_AFLAGS_MODULE := -DMODULE KBUILD_CFLAGS_MODULE := -DMODULE KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds |
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# Read KERNELRELEASE from include/config/kernel.release (if it exists) KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) |
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KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
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export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
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export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
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export CPP AR NM STRIP OBJCOPY OBJDUMP export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE |
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export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
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export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
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export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
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export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
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export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
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export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
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export KBUILD_ARFLAGS |
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# When compiling out-of-tree modules, put MODVERDIR in the module # tree rather than in the kernel tree. The kernel tree might # even be read-only. export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
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# Files to ignore in find ... statements |
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RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \ -o -name .pc -o -name .hg -o -name .git \) -prune -o export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ --exclude CVS --exclude .pc --exclude .hg --exclude .git |
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# =========================================================================== # Rules shared between *config targets and build targets # Basic helpers built in scripts/ |
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PHONY += scripts_basic |
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scripts_basic: $(Q)$(MAKE) $(build)=scripts/basic |
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$(Q)rm -f .tmp_quiet_recordmcount |
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# To avoid any implicit rule to kick in, define an empty command. scripts/basic/%: scripts_basic ; |
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PHONY += outputmakefile |
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# outputmakefile generates a Makefile in the output directory, if using a # separate output directory. This allows convenient use of make in the # output directory. |
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outputmakefile: |
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ifneq ($(KBUILD_SRC),) |
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$(Q)ln -fsn $(srctree) source |
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$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) endif |
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# Support for using generic headers in asm-generic PHONY += asm-generic asm-generic: $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
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src=asm obj=arch/$(SRCARCH)/include/generated/asm $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm |
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# To make sure we do not include .config for any of the *config targets # catch them early, and hand them over to scripts/kconfig/Makefile # It is allowed to specify more targets when calling make, including # mixing *config targets and build targets. |
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# For example 'make oldconfig all'. |
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# Detect when mixed targets is specified, and make a second invocation # of make so .config is not included in this case either (for *config). |
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version_h := include/generated/uapi/linux/version.h |
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no-dot-config-targets := clean mrproper distclean \ |
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cscope gtags TAGS tags help %docs check% coccicheck \ |
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$(version_h) headers_% archheaders archscripts \ |
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kernelversion %src-pkg |
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config-targets := 0 mixed-targets := 0 dot-config := 1 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) dot-config := 0 endif endif ifeq ($(KBUILD_EXTMOD),) ifneq ($(filter config %config,$(MAKECMDGOALS)),) config-targets := 1 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) mixed-targets := 1 endif endif endif ifeq ($(mixed-targets),1) # =========================================================================== # We're called with mixed targets (*config and build targets). # Handle them one by one. %:: FORCE $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ else ifeq ($(config-targets),1) # =========================================================================== # *config targets only - make sure prerequisites are updated, and descend # in scripts/kconfig to make the *config target # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. # KBUILD_DEFCONFIG may point out an alternative default configuration # used for 'make defconfig' |
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include $(srctree)/arch/$(SRCARCH)/Makefile |
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export KBUILD_DEFCONFIG KBUILD_KCONFIG |
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config: scripts_basic outputmakefile FORCE $(Q)mkdir -p include/linux include/config $(Q)$(MAKE) $(build)=scripts/kconfig $@ %config: scripts_basic outputmakefile FORCE |
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$(Q)mkdir -p include/linux include/config |
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$(Q)$(MAKE) $(build)=scripts/kconfig $@ else # =========================================================================== # Build targets only - this includes vmlinux, arch specific targets, clean # targets and others. In general all targets except *config targets. ifeq ($(KBUILD_EXTMOD),) # Additional helpers built in scripts/ # Carefully list dependencies so we do not try to build scripts twice |
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# in parallel |
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PHONY += scripts |
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scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ asm-generic |
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$(Q)$(MAKE) $(build)=$(@) |
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|
496 497 |
# Objects we will link into vmlinux / subdirs we need to visit init-y := init/ |
4d2acfbfd
|
498 |
drivers-y := drivers/ sound/ firmware/ |
1da177e4c
|
499 500 501 502 503 504 |
net-y := net/ libs-y := lib/ core-y := usr/ endif # KBUILD_EXTMOD ifeq ($(dot-config),1) |
9ee4e3365
|
505 506 |
# Read in config -include include/config/auto.conf |
1da177e4c
|
507 |
|
9ee4e3365
|
508 |
ifeq ($(KBUILD_EXTMOD),) |
1da177e4c
|
509 510 |
# Read in dependencies to all Kconfig* files, make sure to run # oldconfig if changes are detected. |
c955ccafc
|
511 |
-include include/config/auto.conf.cmd |
1da177e4c
|
512 |
|
1da177e4c
|
513 |
# To avoid any implicit rule to kick in, define an empty command |
14cdd3c40
|
514 |
$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
1da177e4c
|
515 |
|
c955ccafc
|
516 |
# If .config is newer than include/config/auto.conf, someone tinkered |
752625cff
|
517 |
# with it and forgot to run make oldconfig. |
070b98bfd
|
518 |
# if auto.conf.cmd is missing then we are probably in a cleaned tree so |
752625cff
|
519 |
# we execute the config step to be sure to catch updated Kconfig files |
bc081dd6e
|
520 |
include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
1da177e4c
|
521 522 |
$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig else |
264a26838
|
523 |
# external modules needs include/generated/autoconf.h and include/config/auto.conf |
9ee4e3365
|
524 525 526 527 |
# but do not care if they are up-to-date. Use auto.conf to trigger the test PHONY += include/config/auto.conf include/config/auto.conf: |
264a26838
|
528 |
$(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
5369f5502
|
529 530 531 532 533 |
echo >&2; \ echo >&2 " ERROR: Kernel configuration is invalid."; \ echo >&2 " include/generated/autoconf.h or $@ are missing.";\ echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ echo >&2 ; \ |
9ee4e3365
|
534 535 536 |
/bin/false) endif # KBUILD_EXTMOD |
c955ccafc
|
537 |
|
1da177e4c
|
538 539 |
else # Dummy target needed, because used as prerequisite |
c955ccafc
|
540 |
include/config/auto.conf: ; |
9ee4e3365
|
541 |
endif # $(dot-config) |
1da177e4c
|
542 543 544 545 |
# The all: target is the default when no target is given on the # command line. # This allow a user to issue only 'make' to build a kernel including modules |
c84471614
|
546 |
# Defaults to vmlinux, but the arch makefile usually adds further targets |
1da177e4c
|
547 548 549 |
all: vmlinux ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
e74fc973b
|
550 |
KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) |
1da177e4c
|
551 |
else |
a0f97e06a
|
552 |
KBUILD_CFLAGS += -O2 |
1da177e4c
|
553 |
endif |
a1f42beb8
|
554 |
include $(srctree)/arch/$(SRCARCH)/Makefile |
1873e870f
|
555 556 557 558 559 560 561 562 563 |
ifdef CONFIG_READABLE_ASM # Disable optimizations that make assembler listings hard to read. # reorder blocks reorders the control in the function # ipa clone creates specialized cloned functions # partial inlining inlines only parts of functions KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ $(call cc-option,-fno-ipa-cp-clone,) \ $(call cc-option,-fno-partial-inlining) endif |
08f67461c
|
564 |
ifneq ($(CONFIG_FRAME_WARN),0) |
35bb5b1e0
|
565 566 |
KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) endif |
e06b8b98d
|
567 |
# Force gcc to behave correct even for buggy distributions |
5d707e9c8
|
568 |
ifndef CONFIG_CC_STACKPROTECTOR |
e06b8b98d
|
569 |
KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
5d707e9c8
|
570 |
endif |
e06b8b98d
|
571 |
|
af0e5d565
|
572 573 |
# This warning generated too much noise in a regular build. # Use make W=1 to enable this warning (see scripts/Makefile.build) |
8417da6f2
|
574 |
KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
af0e5d565
|
575 |
|
1da177e4c
|
576 |
ifdef CONFIG_FRAME_POINTER |
a0f97e06a
|
577 |
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
1da177e4c
|
578 |
else |
7e9501fde
|
579 580 581 582 583 584 |
# Some targets (ARM with Thumb2, for example), can't be built with frame # pointers. For those, we don't have FUNCTION_TRACER automatically # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is # incompatible with -fomit-frame-pointer with current GCC, so we don't use # -fomit-frame-pointer with FUNCTION_TRACER. ifndef CONFIG_FUNCTION_TRACER |
a0f97e06a
|
585 |
KBUILD_CFLAGS += -fomit-frame-pointer |
1da177e4c
|
586 |
endif |
7e9501fde
|
587 |
endif |
1da177e4c
|
588 589 |
ifdef CONFIG_DEBUG_INFO |
a0f97e06a
|
590 |
KBUILD_CFLAGS += -g |
222d394d3
|
591 |
KBUILD_AFLAGS += -gdwarf-2 |
1da177e4c
|
592 |
endif |
d6f4ceb79
|
593 |
ifdef CONFIG_DEBUG_INFO_REDUCED |
e82c4bb8b
|
594 595 |
KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ $(call cc-option,-fno-var-tracking) |
d6f4ceb79
|
596 |
endif |
606576ce8
|
597 |
ifdef CONFIG_FUNCTION_TRACER |
a2546fae0
|
598 599 600 601 602 |
ifdef CONFIG_HAVE_FENTRY CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) endif KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) KBUILD_AFLAGS += $(CC_USING_FENTRY) |
72441cb1f
|
603 |
ifdef CONFIG_DYNAMIC_FTRACE |
cf4db2597
|
604 |
ifdef CONFIG_HAVE_C_RECORDMCOUNT |
72441cb1f
|
605 606 607 608 |
BUILD_C_RECORDMCOUNT := y export BUILD_C_RECORDMCOUNT endif endif |
16444a8a4
|
609 |
endif |
91341d4b2
|
610 611 612 613 |
# We trigger additional mismatches with less inlining ifdef CONFIG_DEBUG_SECTION_MISMATCH KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) endif |
e8e699317
|
614 |
# arch Makefile may override CC so keep this after arch Makefile is included |
e8f5bdb02
|
615 |
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
e8e699317
|
616 |
CHECKFLAGS += $(NOSTDINC_FLAGS) |
1da177e4c
|
617 |
# warn about C99 declaration after statement |
a0f97e06a
|
618 |
KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
1da177e4c
|
619 |
|
070b98bfd
|
620 |
# disable pointer signed / unsigned warnings in gcc 4.0 |
8417da6f2
|
621 |
KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
1da177e4c
|
622 |
|
fe8d0a410
|
623 |
# disable invalid "can't wrap" optimizations for signed / pointers |
a137802ee
|
624 |
KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
d0115552c
|
625 |
|
8f7f5c9fc
|
626 627 |
# conserve stack if available KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
809704721
|
628 629 630 631 632 |
# disallow errors like 'EXPORT_GPL(foo);' with missing header KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) # require functions to have arguments in prototypes, not empty 'int foo()' KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) |
40df759e2
|
633 634 |
# use the deterministic mode of AR if available KBUILD_ARFLAGS := $(call ar-option,D) |
bf5438fca
|
635 636 637 638 |
# check for 'asm goto' ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO endif |
06c5040cd
|
639 |
# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
70cfe0268
|
640 641 642 |
KBUILD_CPPFLAGS += $(KCPPFLAGS) KBUILD_AFLAGS += $(KAFLAGS) KBUILD_CFLAGS += $(KCFLAGS) |
52bcc3308
|
643 |
|
18991197b
|
644 645 |
# Use --build-id when available. LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ |
f86fd3066
|
646 |
$(call cc-ldoption, -Wl$(comma)--build-id,)) |
6588169d5
|
647 |
KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
18991197b
|
648 |
LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
5d7d18f5b
|
649 |
ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
d79a27195
|
650 |
LDFLAGS_vmlinux += $(call ld-option, -X,) |
5d7d18f5b
|
651 |
endif |
1da177e4c
|
652 |
# Default kernel image to build when no specific target is given. |
070b98bfd
|
653 |
# KBUILD_IMAGE may be overruled on the command line or |
1da177e4c
|
654 655 656 657 658 659 660 661 662 663 664 665 666 |
# set in the environment # Also any assignments in arch/$(ARCH)/Makefile take precedence over # this default value export KBUILD_IMAGE ?= vmlinux # # INSTALL_PATH specifies where to place the updated kernel and system map # images. Default is /boot, but you can set it to other values export INSTALL_PATH ?= /boot # # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory # relocations required by build roots. This is not defined in the |
070b98bfd
|
667 |
# makefile but the argument can be passed to make if needed. |
1da177e4c
|
668 |
# |
df9df036d
|
669 |
MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
1da177e4c
|
670 |
export MODLIB |
ac031f26e
|
671 |
# |
2ea038917
|
672 673 674 |
# INSTALL_MOD_STRIP, if defined, will cause modules to be # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then # the default option --strip-debug will be used. Otherwise, |
177b241d0
|
675 |
# INSTALL_MOD_STRIP value will be used as the options to the strip command. |
2ea038917
|
676 |
|
ac031f26e
|
677 678 |
ifdef INSTALL_MOD_STRIP ifeq ($(INSTALL_MOD_STRIP),1) |
2ea038917
|
679 |
mod_strip_cmd = $(STRIP) --strip-debug |
ac031f26e
|
680 |
else |
2ea038917
|
681 |
mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
ac031f26e
|
682 683 |
endif # INSTALL_MOD_STRIP=1 else |
2ea038917
|
684 |
mod_strip_cmd = true |
ac031f26e
|
685 686 |
endif # INSTALL_MOD_STRIP export mod_strip_cmd |
1bf49dd4b
|
687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 |
# Select initial ramdisk compression format, default is gzip(1). # This shall be used by the dracut(8) tool while creating an initramfs image. # INITRD_COMPRESS=gzip ifeq ($(CONFIG_RD_BZIP2), y) INITRD_COMPRESS=bzip2 else ifeq ($(CONFIG_RD_LZMA), y) INITRD_COMPRESS=lzma else ifeq ($(CONFIG_RD_XZ), y) INITRD_COMPRESS=xz else ifeq ($(CONFIG_RD_LZO), y) INITRD_COMPRESS=lzo else ifeq ($(CONFIG_RD_LZ4), y) INITRD_COMPRESS=lz4 endif export INITRD_COMPRESS |
1da177e4c
|
703 |
|
d9d8d7ed4
|
704 |
ifdef CONFIG_MODULE_SIG_ALL |
e2a666d52
|
705 706 707 |
MODSECKEY = ./signing_key.priv MODPUBKEY = ./signing_key.x509 export MODPUBKEY |
4bc9410c0
|
708 |
mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) |
e2a666d52
|
709 710 711 712 |
else mod_sign_cmd = true endif export mod_sign_cmd |
1da177e4c
|
713 |
ifeq ($(KBUILD_EXTMOD),) |
3a65dfe8c
|
714 |
core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
1da177e4c
|
715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 |
vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ $(net-y) $(net-m) $(libs-y) $(libs-m))) vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ $(init-n) $(init-) \ $(core-n) $(core-) $(drivers-n) $(drivers-) \ $(net-n) $(net-) $(libs-n) $(libs-)))) init-y := $(patsubst %/, %/built-in.o, $(init-y)) core-y := $(patsubst %/, %/built-in.o, $(core-y)) drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) net-y := $(patsubst %/, %/built-in.o, $(net-y)) libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) libs-y := $(libs-y1) $(libs-y2) |
1f2bfbd00
|
732 |
# Externally visible symbols (used by link-vmlinux.sh) |
956985705
|
733 734 735 |
export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds |
1f2bfbd00
|
736 |
export LDFLAGS_vmlinux |
6615d6c32
|
737 738 |
# used by scripts/pacmage/Makefile export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) |
9bb482476
|
739 |
|
1f2bfbd00
|
740 |
vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) |
1da177e4c
|
741 |
|
1f2bfbd00
|
742 743 744 |
# Final link of vmlinux cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) quiet_cmd_link-vmlinux = LINK $@ |
1da177e4c
|
745 |
|
1f2bfbd00
|
746 747 748 |
# Include targets which we want to # execute if the rest of the kernel build went well. vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE |
0f836e5fe
|
749 |
ifdef CONFIG_HEADERS_CHECK |
0e7af8d04
|
750 |
$(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
0f836e5fe
|
751 |
endif |
267c4025f
|
752 753 754 |
ifdef CONFIG_SAMPLES $(Q)$(MAKE) $(build)=samples endif |
3794f3e81
|
755 756 757 |
ifdef CONFIG_BUILD_DOCSRC $(Q)$(MAKE) $(build)=Documentation endif |
1f2bfbd00
|
758 |
+$(call if_changed,link-vmlinux) |
741f98fe2
|
759 |
|
1da177e4c
|
760 761 |
# The actual objects are generated when descending, # make sure no implicit rule kicks in |
1f2bfbd00
|
762 |
$(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
1da177e4c
|
763 764 765 766 767 768 |
# Handle descending into subdirectories listed in $(vmlinux-dirs) # Preset locale variables to speed up the build process. Limit locale # tweaks to this spot to avoid wrong language settings when running # make menuconfig etc. # Error messages still appears in the original language |
4f1933620
|
769 |
PHONY += $(vmlinux-dirs) |
5bb782690
|
770 |
$(vmlinux-dirs): prepare scripts |
1da177e4c
|
771 |
$(Q)$(MAKE) $(build)=$@ |
0d0e7718a
|
772 773 774 |
define filechk_kernel.release echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" endef |
83a35e360
|
775 |
# Store (new) KERNELRELEASE string in include/config/kernel.release |
f1d28fb04
|
776 |
include/config/kernel.release: include/config/auto.conf FORCE |
0d0e7718a
|
777 |
$(call filechk,kernel.release) |
cb58455c4
|
778 |
|
1da177e4c
|
779 |
# Things we need to do before we recursively start building the kernel |
5bb782690
|
780 781 782 783 |
# or the modules are listed in "prepare". # A multi level approach is used. prepareN is processed before prepareN-1. # archprepare is used in arch Makefiles and when processed asm symlink, # version.h and scripts_basic is processed / created. |
1da177e4c
|
784 |
|
5bb782690
|
785 |
# Listed in dependency order |
4f1933620
|
786 |
PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
5bb782690
|
787 |
|
86feeaa81
|
788 |
# prepare3 is used to check if we are building in a separate output directory, |
1da177e4c
|
789 790 |
# and if so do: # 1) Check that make has not been executed in the kernel src $(srctree) |
f1d28fb04
|
791 |
prepare3: include/config/kernel.release |
1da177e4c
|
792 |
ifneq ($(KBUILD_SRC),) |
fd54f5028
|
793 |
@$(kecho) ' Using $(srctree) as source for kernel' |
c955ccafc
|
794 |
$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
5369f5502
|
795 796 |
echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ echo >&2 " in the '$(srctree)' directory.";\ |
1da177e4c
|
797 798 |
/bin/false; \ fi; |
1da177e4c
|
799 |
endif |
86feeaa81
|
800 |
# prepare2 creates a makefile if using a separate output directory |
d8ecc5cd8
|
801 |
prepare2: prepare3 outputmakefile asm-generic |
1da177e4c
|
802 |
|
d183e6f57
|
803 |
prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
f7f16b779
|
804 |
include/config/auto.conf |
7bb9d092d
|
805 |
$(cmd_crmodverdir) |
1da177e4c
|
806 |
|
6520fe556
|
807 |
archprepare: archheaders archscripts prepare1 scripts_basic |
5bb782690
|
808 809 |
prepare0: archprepare FORCE |
8d36a6236
|
810 |
$(Q)$(MAKE) $(build)=. |
86feeaa81
|
811 |
|
1da177e4c
|
812 |
# All the preparing.. |
d395efb54
|
813 |
prepare: prepare0 |
1da177e4c
|
814 |
|
1da177e4c
|
815 816 817 818 819 820 821 |
# Generate some files # --------------------------------------------------------------------------- # KERNELRELEASE can change from a few different places, meaning version.h # needs to be updated, so this check is forced on all builds uts_len := 64 |
63104eec2
|
822 823 824 825 826 827 828 |
define filechk_utsrelease.h if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ exit 1; \ fi; \ (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) endef |
1da177e4c
|
829 830 |
define filechk_version.h |
450c6076a
|
831 832 |
(echo \#define LINUX_VERSION_CODE $(shell \ expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ |
63104eec2
|
833 |
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
1da177e4c
|
834 |
endef |
d183e6f57
|
835 |
$(version_h): $(srctree)/Makefile FORCE |
1da177e4c
|
836 |
$(call filechk,version.h) |
273b281fa
|
837 |
include/generated/utsrelease.h: include/config/kernel.release FORCE |
63104eec2
|
838 |
$(call filechk,utsrelease.h) |
179efcb47
|
839 840 |
PHONY += headerdep headerdep: |
9663d9890
|
841 842 |
$(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ $(srctree)/scripts/headerdep.pl -I$(srctree)/include |
179efcb47
|
843 |
|
1da177e4c
|
844 |
# --------------------------------------------------------------------------- |
4f1933620
|
845 |
PHONY += depend dep |
1da177e4c
|
846 847 848 849 |
depend dep: @echo '*** Warning: make $@ is unnecessary now.' # --------------------------------------------------------------------------- |
88ecf814c
|
850 851 852 853 854 855 856 857 858 859 |
# Firmware install INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware export INSTALL_FW_PATH PHONY += firmware_install firmware_install: FORCE @mkdir -p $(objtree)/firmware $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install # --------------------------------------------------------------------------- |
8d730cfb5
|
860 |
# Kernel headers |
8d730cfb5
|
861 |
|
e6883b187
|
862 863 |
#Default location for installed headers export INSTALL_HDR_PATH = $(objtree)/usr |
6d7162758
|
864 |
|
e6883b187
|
865 |
hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
2fb9b1bd9
|
866 867 868 |
# If we do an all arch process set dst to asm-$(hdr-arch) hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) |
e6883b187
|
869 |
|
052ad2749
|
870 871 |
PHONY += archheaders archheaders: |
6520fe556
|
872 873 |
PHONY += archscripts archscripts: |
e6883b187
|
874 |
PHONY += __headers |
d183e6f57
|
875 |
__headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE |
e1b702cf2
|
876 |
$(Q)$(MAKE) $(build)=scripts build_unifdef |
e6883b187
|
877 878 |
PHONY += headers_install_all |
2fb9b1bd9
|
879 880 |
headers_install_all: $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install |
6d7162758
|
881 |
|
8d730cfb5
|
882 |
PHONY += headers_install |
e6883b187
|
883 |
headers_install: __headers |
10b63956f
|
884 885 886 887 |
$(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ $(error Headers not exportable for the $(SRCARCH) architecture)) $(Q)$(MAKE) $(hdr-inst)=include/uapi $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) |
8d730cfb5
|
888 |
|
1f85712e6
|
889 890 |
PHONY += headers_check_all headers_check_all: headers_install_all |
2fb9b1bd9
|
891 |
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
1f85712e6
|
892 |
|
684753599
|
893 894 |
PHONY += headers_check headers_check: headers_install |
10b63956f
|
895 896 |
$(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 |
684753599
|
897 |
|
8d730cfb5
|
898 |
# --------------------------------------------------------------------------- |
1da177e4c
|
899 900 901 |
# Modules ifdef CONFIG_MODULES |
070b98bfd
|
902 |
# By default, build modules as well |
1da177e4c
|
903 |
|
73d1393eb
|
904 |
all: modules |
1da177e4c
|
905 906 |
# Build modules |
551559e13
|
907 908 909 910 |
# # A module can be listed more than once in obj-m resulting in # duplicate lines in modules.order files. Those are removed # using awk while concatenating to the final file. |
1da177e4c
|
911 |
|
4f1933620
|
912 |
PHONY += modules |
2da30e703
|
913 |
modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
551559e13
|
914 |
$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
fd54f5028
|
915 |
@$(kecho) ' Building modules, stage 2.'; |
b805aa0e7
|
916 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
44463f7dd
|
917 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
1da177e4c
|
918 |
|
a6c366324
|
919 920 |
modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin |
73d1393eb
|
921 |
%/modules.builtin: include/config/auto.conf |
a6c366324
|
922 |
$(Q)$(MAKE) $(modbuiltin)=$* |
1da177e4c
|
923 924 |
# Target to prepare building external modules |
4f1933620
|
925 |
PHONY += modules_prepare |
5bb782690
|
926 |
modules_prepare: prepare scripts |
1da177e4c
|
927 928 |
# Target to install modules |
4f1933620
|
929 |
PHONY += modules_install |
1da177e4c
|
930 |
modules_install: _modinst_ _modinst_post |
4f1933620
|
931 |
PHONY += _modinst_ |
2da30e703
|
932 |
_modinst_: |
1da177e4c
|
933 934 935 936 937 938 939 940 |
@rm -rf $(MODLIB)/kernel @rm -f $(MODLIB)/source @mkdir -p $(MODLIB)/kernel @ln -s $(srctree) $(MODLIB)/source @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ rm -f $(MODLIB)/build ; \ ln -s $(objtree) $(MODLIB)/build ; \ fi |
551559e13
|
941 |
@cp -f $(objtree)/modules.order $(MODLIB)/ |
bc081dd6e
|
942 |
@cp -f $(objtree)/modules.builtin $(MODLIB)/ |
b805aa0e7
|
943 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4c
|
944 |
|
50a8ec31c
|
945 |
# This depmod is only for convenience to give the initial |
1da177e4c
|
946 947 |
# boot a modules.dep even before / is mounted read-write. However the # boot script depmod is the master version. |
4f1933620
|
948 |
PHONY += _modinst_post |
6d128e1e7
|
949 |
_modinst_post: _modinst_ |
88ecf814c
|
950 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
50a8ec31c
|
951 |
$(call cmd,depmod) |
1da177e4c
|
952 |
|
d890f510c
|
953 954 955 956 957 |
ifeq ($(CONFIG_MODULE_SIG), y) PHONY += modules_sign modules_sign: $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign endif |
1da177e4c
|
958 959 960 961 962 963 |
else # CONFIG_MODULES # Modules not configured # --------------------------------------------------------------------------- modules modules_install: FORCE |
5369f5502
|
964 965 966 967 968 |
@echo >&2 @echo >&2 "The present kernel configuration has modules disabled." @echo >&2 "Type 'make config' and enable loadable module support." @echo >&2 "Then build a kernel with module support enabled." @echo >&2 |
1da177e4c
|
969 970 971 |
@exit 1 endif # CONFIG_MODULES |
1da177e4c
|
972 973 974 975 976 977 978 979 980 |
### # Cleaning is done on three levels. # make clean Delete most generated files # Leave enough to build external modules # make mrproper Delete the current configuration, and all generated files # make distclean Remove editor backup files, patch leftover files and the like # Directories & files removed with 'make clean' CLEAN_DIRS += $(MODVERDIR) |
1da177e4c
|
981 982 |
# Directories & files removed with 'make mrproper' |
d8ecc5cd8
|
983 984 |
MRPROPER_DIRS += include/config usr/include include/generated \ arch/*/include/generated |
d183e6f57
|
985 |
MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ |
d5b719365
|
986 987 988 989 |
Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ signing_key.priv signing_key.x509 x509.genkey \ extra_certificates signing_key.x509.keyid \ signing_key.x509.signer |
1da177e4c
|
990 991 992 993 994 |
# clean - Delete most, but leave enough to build external modules # clean: rm-dirs := $(CLEAN_DIRS) clean: rm-files := $(CLEAN_FILES) |
fb68d4be9
|
995 |
clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
1da177e4c
|
996 |
|
bd1ee804a
|
997 |
PHONY += $(clean-dirs) clean archclean vmlinuxclean |
1da177e4c
|
998 999 |
$(clean-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
bd1ee804a
|
1000 1001 1002 1003 |
vmlinuxclean: $(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean clean: archclean vmlinuxclean |
1da177e4c
|
1004 1005 1006 1007 1008 1009 |
# mrproper - Delete all generated files, including .config # mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) |
4f1933620
|
1010 |
PHONY += $(mrproper-dirs) mrproper archmrproper |
1da177e4c
|
1011 1012 1013 1014 1015 1016 1017 1018 1019 |
$(mrproper-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) mrproper: clean archmrproper $(mrproper-dirs) $(call cmd,rmdirs) $(call cmd,rmfiles) # distclean # |
4f1933620
|
1020 |
PHONY += distclean |
1da177e4c
|
1021 1022 1023 |
distclean: mrproper @find $(srctree) $(RCS_FIND_IGNORE) \ |
070b98bfd
|
1024 |
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
1da177e4c
|
1025 |
-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
f4b129f51
|
1026 |
-o -name '.*.rej' \ |
1da177e4c
|
1027 1028 1029 1030 1031 1032 1033 1034 |
-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ -type f -print | xargs rm -f # Packaging of the kernel to various formats # --------------------------------------------------------------------------- # rpm target kept for backward compatibility package-dir := $(srctree)/scripts/package |
bafb67470
|
1035 1036 |
%src-pkg: FORCE $(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6de
|
1037 |
%pkg: include/config/kernel.release FORCE |
6c2133e11
|
1038 |
$(Q)$(MAKE) $(build)=$(package-dir) $@ |
031ecc6de
|
1039 |
rpm: include/config/kernel.release FORCE |
6c2133e11
|
1040 |
$(Q)$(MAKE) $(build)=$(package-dir) $@ |
1da177e4c
|
1041 1042 1043 1044 |
# Brief documentation of the typical targets used # --------------------------------------------------------------------------- |
5dffbe811
|
1045 |
boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
1da177e4c
|
1046 |
boards := $(notdir $(boards)) |
5dffbe811
|
1047 1048 |
board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) board-dirs := $(sort $(notdir $(board-dirs:/=))) |
1da177e4c
|
1049 1050 1051 |
help: @echo 'Cleaning targets:' |
5ea084ef9
|
1052 |
@echo ' clean - Remove most generated files but keep the config and' |
5cc8d246d
|
1053 |
@echo ' enough build support to build external modules' |
5ea084ef9
|
1054 |
@echo ' mrproper - Remove all generated files + config + various backup files' |
5cc8d246d
|
1055 |
@echo ' distclean - mrproper + remove editor backup and patch files' |
1da177e4c
|
1056 1057 1058 1059 1060 1061 1062 1063 |
@echo '' @echo 'Configuration targets:' @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help @echo '' @echo 'Other generic targets:' @echo ' all - Build all targets marked with [*]' @echo '* vmlinux - Build the bare kernel' @echo '* modules - Build all modules' |
9cc5d74c8
|
1064 |
@echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
88ecf814c
|
1065 1066 |
@echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' |
1da177e4c
|
1067 |
@echo ' dir/ - Build all files in dir and below' |
627189797
|
1068 1069 1070 |
@echo ' dir/file.[oisS] - Build specified target only' @echo ' dir/file.lst - Build specified mixed source/assembly target only' @echo ' (requires a recent binutils and recent build (System.map))' |
155ad605b
|
1071 |
@echo ' dir/file.ko - Build module including final link' |
c4d5ee67c
|
1072 |
@echo ' modules_prepare - Set up for building external modules' |
1da177e4c
|
1073 1074 |
@echo ' tags/TAGS - Generate tags file for editors' @echo ' cscope - Generate cscope index' |
f4ed1009f
|
1075 |
@echo ' gtags - Generate GNU GLOBAL index' |
6d1288425
|
1076 |
@echo ' kernelrelease - Output the release version string' |
cb58455c4
|
1077 |
@echo ' kernelversion - Output the version stored in Makefile' |
c398ff00f
|
1078 |
@echo ' image_name - Output the image name' |
2fb9b1bd9
|
1079 |
@echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
59df3230f
|
1080 |
echo ' (default: $(INSTALL_HDR_PATH))'; \ |
2fb9b1bd9
|
1081 |
echo '' |
1da177e4c
|
1082 |
@echo 'Static analysers' |
1da177e4c
|
1083 1084 |
@echo ' checkstack - Generate a list of stack hogs' @echo ' namespacecheck - Name space analysis on compiled kernel' |
aa025e7d5
|
1085 |
@echo ' versioncheck - Sanity check on version.h usage' |
ec2d987f9
|
1086 |
@echo ' includecheck - Check for duplicate included header files' |
295ac0518
|
1087 |
@echo ' export_report - List the usages of all exported symbols' |
179efcb47
|
1088 |
@echo ' headers_check - Sanity check on exported headers' |
74425eee7
|
1089 1090 1091 |
@echo ' headerdep - Detect inclusion cycles in headers' @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help @echo '' |
1da177e4c
|
1092 |
@echo 'Kernel packaging:' |
6c2133e11
|
1093 |
@$(MAKE) $(build)=$(package-dir) help |
1da177e4c
|
1094 1095 1096 1097 |
@echo '' @echo 'Documentation targets:' @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp @echo '' |
01dee1881
|
1098 |
@echo 'Architecture specific targets ($(SRCARCH)):' |
1da177e4c
|
1099 |
@$(if $(archhelp),$(archhelp),\ |
01dee1881
|
1100 |
echo ' No architecture specific help defined for $(SRCARCH)') |
1da177e4c
|
1101 1102 1103 1104 1105 1106 |
@echo '' @$(if $(boards), \ $(foreach b, $(boards), \ printf " %-24s - Build for %s\ " $(b) $(subst _defconfig,,$(b));) \ echo '') |
5dffbe811
|
1107 1108 1109 1110 1111 1112 1113 |
@$(if $(board-dirs), \ $(foreach b, $(board-dirs), \ printf " %-16s - Show %s-specific targets\ " help-$(b) $(b);) \ printf " %-16s - Show all of the above\ " help-boards; \ echo '') |
1da177e4c
|
1114 1115 |
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' |
45d506bd6
|
1116 |
@echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
1da177e4c
|
1117 |
@echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
701842e3b
|
1118 1119 |
@echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' @echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
af07ce3e7
|
1120 |
@echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
28bc20dcc
|
1121 1122 1123 1124 |
@echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' @echo ' 1: warnings which may be relevant and do not occur too often' @echo ' 2: warnings which occur quite often but may still be relevant' @echo ' 3: more obscure warnings, can most likely be ignored' |
a6de553da
|
1125 |
@echo ' Multiple levels can be combined with W=12 or W=123' |
1da177e4c
|
1126 1127 1128 |
@echo '' @echo 'Execute "make" or "make all" to build all targets marked with [*] ' @echo 'For further info see the ./README file' |
5dffbe811
|
1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 |
help-board-dirs := $(addprefix help-,$(board-dirs)) help-boards: $(help-board-dirs) boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) $(help-board-dirs): help-%: @echo 'Architecture specific targets ($(SRCARCH) $*):' @$(if $(boards-per-dir), \ $(foreach b, $(boards-per-dir), \ printf " %-24s - Build for %s\ " $*/$(b) $(subst _defconfig,,$(b));) \ echo '') |
1da177e4c
|
1142 1143 1144 |
# Documentation targets # --------------------------------------------------------------------------- %docs: scripts_basic FORCE |
bffd2020a
|
1145 |
$(Q)$(MAKE) $(build)=scripts build_docproc |
1da177e4c
|
1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 |
$(Q)$(MAKE) $(build)=Documentation/DocBook $@ else # KBUILD_EXTMOD ### # External module support. # When building external modules the kernel used as basis is considered # read-only, and no consistency checks are made and the make # system is not used on the basis kernel. If updates are required # in the basis kernel ordinary make commands (without M=...) must # be used. # # The following are the only valid targets when building external # modules. # make M=dir clean Delete all automatically generated files # make M=dir modules Make all modules in specified dir # make M=dir Same as 'make M=dir modules' # make M=dir modules_install |
070b98bfd
|
1164 |
# Install the modules built in the module directory |
1da177e4c
|
1165 1166 1167 1168 |
# Assumes install directory is already created # We are always building modules KBUILD_MODULES := 1 |
4f1933620
|
1169 |
PHONY += crmodverdir |
1da177e4c
|
1170 |
crmodverdir: |
7bb9d092d
|
1171 |
$(cmd_crmodverdir) |
1da177e4c
|
1172 |
|
4f1933620
|
1173 |
PHONY += $(objtree)/Module.symvers |
1da177e4c
|
1174 1175 1176 1177 1178 1179 1180 1181 |
$(objtree)/Module.symvers: @test -e $(objtree)/Module.symvers || ( \ echo; \ echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ echo " is missing; modules will have no dependencies and modversions."; \ echo ) module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
4f1933620
|
1182 |
PHONY += $(module-dirs) modules |
1da177e4c
|
1183 1184 1185 1186 |
$(module-dirs): crmodverdir $(objtree)/Module.symvers $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) modules: $(module-dirs) |
fd54f5028
|
1187 |
@$(kecho) ' Building modules, stage 2.'; |
b805aa0e7
|
1188 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
1da177e4c
|
1189 |
|
4f1933620
|
1190 |
PHONY += modules_install |
a67dc21a3
|
1191 |
modules_install: _emodinst_ _emodinst_post |
e63046630
|
1192 |
|
4f1933620
|
1193 1194 |
install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) PHONY += _emodinst_ |
a67dc21a3
|
1195 |
_emodinst_: |
a67dc21a3
|
1196 |
$(Q)mkdir -p $(MODLIB)/$(install-dir) |
b805aa0e7
|
1197 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
1da177e4c
|
1198 |
|
4f1933620
|
1199 |
PHONY += _emodinst_post |
a67dc21a3
|
1200 1201 |
_emodinst_post: _emodinst_ $(call cmd,depmod) |
1da177e4c
|
1202 |
clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
4f1933620
|
1203 |
PHONY += $(clean-dirs) clean |
1da177e4c
|
1204 1205 1206 1207 |
$(clean-dirs): $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) clean: rm-dirs := $(MODVERDIR) |
88d7be031
|
1208 |
clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
1da177e4c
|
1209 1210 1211 1212 1213 1214 1215 1216 1217 |
help: @echo ' Building external modules.' @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' @echo '' @echo ' modules - default target, build the module(s)' @echo ' modules_install - install the module' @echo ' clean - remove generated files in module directory only' @echo '' |
06300b21f
|
1218 1219 |
# Dummies... |
4f1933620
|
1220 |
PHONY += prepare scripts |
06300b21f
|
1221 1222 |
prepare: ; scripts: ; |
1da177e4c
|
1223 |
endif # KBUILD_EXTMOD |
88d7be031
|
1224 1225 1226 |
clean: $(clean-dirs) $(call cmd,rmdirs) $(call cmd,rmfiles) |
43f67c981
|
1227 |
@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
88d7be031
|
1228 |
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
addbcdbbf
|
1229 |
-o -name '*.ko.*' \ |
88d7be031
|
1230 1231 1232 1233 |
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ -o -name '*.symtypes' -o -name 'modules.order' \ -o -name modules.builtin -o -name '.tmp_*.o.*' \ -o -name '*.gcno' \) -type f -print | xargs rm -f |
1da177e4c
|
1234 1235 |
# Generate tags for editors # --------------------------------------------------------------------------- |
a680eedc6
|
1236 1237 |
quiet_cmd_tags = GEN $@ cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
1da177e4c
|
1238 |
|
f4ed1009f
|
1239 |
tags TAGS cscope gtags: FORCE |
1da177e4c
|
1240 |
$(call cmd,tags) |
1da177e4c
|
1241 1242 |
# Scripts to check various things for consistency # --------------------------------------------------------------------------- |
279f3dd35
|
1243 |
PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
1da177e4c
|
1244 |
includecheck: |
436f876cc
|
1245 |
find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4c
|
1246 |
-name '*.[hcS]' -type f -print | sort \ |
800074345
|
1247 |
| xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
1da177e4c
|
1248 1249 |
versioncheck: |
2ee2d2928
|
1250 |
find $(srctree)/* $(RCS_FIND_IGNORE) \ |
1da177e4c
|
1251 |
-name '*.[hcS]' -type f -print | sort \ |
800074345
|
1252 |
| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
1da177e4c
|
1253 |
|
74425eee7
|
1254 1255 |
coccicheck: $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ |
1da177e4c
|
1256 1257 |
namespacecheck: $(PERL) $(srctree)/scripts/namespace.pl |
295ac0518
|
1258 1259 |
export_report: $(PERL) $(srctree)/scripts/export_report.pl |
1da177e4c
|
1260 1261 |
endif #ifeq ($(config-targets),1) endif #ifeq ($(mixed-targets),1) |
c398ff00f
|
1262 |
PHONY += checkstack kernelrelease kernelversion image_name |
e3ccf6e36
|
1263 |
|
011e3a9ad
|
1264 1265 1266 1267 1268 1269 1270 1271 1272 |
# UML needs a little special treatment here. It wants to use the host # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone # else wants $(ARCH), including people doing cross-builds, which means # that $(SUBARCH) doesn't work here. ifeq ($(ARCH), um) CHECKSTACK_ARCH := $(SUBARCH) else CHECKSTACK_ARCH := $(ARCH) endif |
1da177e4c
|
1273 1274 |
checkstack: $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
011e3a9ad
|
1275 |
$(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
1da177e4c
|
1276 |
|
7b8ea53d7
|
1277 1278 |
kernelrelease: @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
01ab17887
|
1279 |
|
cb58455c4
|
1280 |
kernelversion: |
2244cbd8a
|
1281 |
@echo $(KERNELVERSION) |
1da177e4c
|
1282 |
|
c398ff00f
|
1283 1284 |
image_name: @echo $(KBUILD_IMAGE) |
ea01fa9f6
|
1285 1286 |
# Clear a bunch of variables before executing the submake tools/: FORCE |
bf35182ff
|
1287 |
$(Q)mkdir -p $(objtree)/tools |
a50e43332
|
1288 |
$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ |
ea01fa9f6
|
1289 1290 |
tools/%: FORCE |
bf35182ff
|
1291 |
$(Q)mkdir -p $(objtree)/tools |
a50e43332
|
1292 |
$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* |
ea01fa9f6
|
1293 |
|
06300b21f
|
1294 1295 |
# Single targets # --------------------------------------------------------------------------- |
bc2546a67
|
1296 |
# Single targets are compatible with: |
e1b8513d2
|
1297 |
# - build with mixed source and output |
bc2546a67
|
1298 1299 1300 1301 1302 1303 1304 |
# - build with separate output dir 'make O=...' # - external modules # # target-dir => where to store outputfile # build-dir => directory in kernel source tree to use ifeq ($(KBUILD_EXTMOD),) |
aa360879e
|
1305 |
build-dir = $(patsubst %/,%,$(dir $@)) |
bc2546a67
|
1306 1307 1308 1309 1310 1311 |
target-dir = $(dir $@) else zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) endif |
f6ecebd65
|
1312 |
%.s: %.c prepare scripts FORCE |
bc2546a67
|
1313 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65
|
1314 |
%.i: %.c prepare scripts FORCE |
bc2546a67
|
1315 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65
|
1316 |
%.o: %.c prepare scripts FORCE |
bc2546a67
|
1317 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65
|
1318 |
%.lst: %.c prepare scripts FORCE |
bc2546a67
|
1319 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65
|
1320 |
%.s: %.S prepare scripts FORCE |
bc2546a67
|
1321 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
f6ecebd65
|
1322 |
%.o: %.S prepare scripts FORCE |
bc2546a67
|
1323 |
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
15fde6751
|
1324 1325 |
%.symtypes: %.c prepare scripts FORCE $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
06300b21f
|
1326 |
|
bc2546a67
|
1327 |
# Modules |
31110ebbe
|
1328 1329 1330 1331 1332 |
/: prepare scripts FORCE $(cmd_crmodverdir) $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ $(build)=$(build-dir) %/: prepare scripts FORCE |
7bb9d092d
|
1333 |
$(cmd_crmodverdir) |
06300b21f
|
1334 |
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a67
|
1335 1336 |
$(build)=$(build-dir) %.ko: prepare scripts FORCE |
7bb9d092d
|
1337 |
$(cmd_crmodverdir) |
06300b21f
|
1338 |
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
bc2546a67
|
1339 |
$(build)=$(build-dir) $(@:.ko=.o) |
b805aa0e7
|
1340 |
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
06300b21f
|
1341 |
|
1da177e4c
|
1342 1343 1344 1345 1346 1347 1348 1349 |
# FIXME Should go into a make.lib or something # =========================================================================== quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) cmd_rmdirs = rm -rf $(rm-dirs) quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) cmd_rmfiles = rm -f $(rm-files) |
bc3c26fe6
|
1350 |
# Run depmod only if we have System.map and depmod is executable |
50a8ec31c
|
1351 |
quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
569658ddd
|
1352 |
cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
b92021b09
|
1353 |
$(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" |
50a8ec31c
|
1354 |
|
7bb9d092d
|
1355 |
# Create temporary dir for module support files |
ab19f8794
|
1356 1357 1358 |
# clean it up only when building all modules cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) |
1da177e4c
|
1359 |
|
1da177e4c
|
1360 1361 1362 1363 1364 1365 1366 1367 1368 |
# read all saved command lines targets := $(wildcard $(sort $(targets))) cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) ifneq ($(cmd_files),) $(cmd_files): ; # Do not try to update included dependency files include $(cmd_files) endif |
1da177e4c
|
1369 1370 1371 1372 |
# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir # Usage: # $(Q)$(MAKE) $(clean)=dir clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj |
1da177e4c
|
1373 |
endif # skip-makefile |
4f1933620
|
1374 |
PHONY += FORCE |
1da177e4c
|
1375 |
FORCE: |
4f1933620
|
1376 |
|
4f1933620
|
1377 |
# Declare the contents of the .PHONY variable as phony. We keep that |
fe8d0a410
|
1378 |
# information in a variable so we can use it in if_changed and friends. |
4f1933620
|
1379 |
.PHONY: $(PHONY) |